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Table 4 Hyperemesis gravidarum severity groups and placental measures

From: Hyperemesis gravidarum and placental dysfunction disorders

  Values (SD) Crude model Adjusted modela
   Coefficients (95% CI)b p Coefficients (95% CI)b p
Placental weight (g)c
 No HG 536 (145.2) Reference   Reference  
 Mild HG 530 (102.3) -5.98 (-42.92; 30.95) 0.75 -6.05 (-41.25; 29.15) 0.74
 Severe HG 547 (98.4) 10.73 (-126.91; 148.38) 0.88 47.76 (-97.62; 193.14) 0.52
PW/BW ratioc
 No HG 0.18 (0.05) Reference   Reference  
 Mild HG 0.18 (0.05) 0.001 (-0.01; 0.01) 0.89 0.002 (-0.01; 0.02) 0.72
 Severe HG 0.19 (0.05) 0.02 (-0.03; 0.06) 0.54 0.04 (-0.01; 0.09) 0.15
  1. Abbreviations: CI confidence interval, HG hyperemesis gravidarum, PW/BW ratio placenta-to-birthweight ratio, g grams
  2. aAdjusted model: adjusted for socio-economic status (as reflected by income), smoking status, gravidity, maternal age and pre-pregnancy BMI
  3. bResults are expressed as linear regression coefficients (95% CI)
  4. cMultiple pregnancies, stillbirths and miscarriages were excluded from the analyses